NATO was formed to protect its members from aggression by the Soviet Union. NATO stands for the North Atlantic Treaty Organization. NATO's members include the U.S. and Canada. NATO protects democracy and individual freedom.
Step-by-step explanation:
Nato's essential purpose is to safeguard the freedom and security of all its members by political and military means. Collective defense is at the heart of the Alliance and creates a spirit of solidarity and cohesion among its members. Its a collective defense strategy against the soviet which was trying to spread communism across Asia. Hence United states, Canada and other countries from western Europe created NATO. The expansion of NATO is North Atlantic Treaty Organisation.
Democratic nations are threatened by the spread of communism. The fall of democracy in Czechoslovakia and communism arose which became an alarming sign for the spread of communist principles across Europe. If soviet attacked any country then all countries who are the members of NATO would fight as a group against soviet which was a strong wall that defended communism and its spread.